I'm only just 38. I have managed to drop a trouser size recently on only a few retro bike meets! Unemployment beckons so I may fit a few more longer rides in and will use my bike with a trailer for shopping etc.
My brain is just started to realise that although for the most part willing, the body isn't as capable as it was twenty odd years ago!
Favourite age so far? 32 I reckon. Still had some hair, weight gain wasn't a problem and in my dreams people would be able to say, "What?! She's half his age!!" and I wouldn't be thrown into prison.
Now, a mere six years later I am in the throws of a full on mid life crisis and harbour secret desires not only for the school leaver across the road, but also to be fitter at forty than I was at thirty. This will be proved (maybe) by a UK end to end attempt.